On Wednesday, April 12, 2023 at 8:00:16 AM UTC-4, Mitchell Smith wrote:
> But, Herbrand logic is not based upon an analytical conception of truth.
As usual, you do NOT know what THE FUCK you are talking about.
There IS NO SUCH THING as "Herbrand Logic".
Seriously, if you WOULD BOTHER TO GOOGLE IT, you would NOTICE that you
DO NOT GET ANY hits. Oh, you get pages where "Herbrand" and "logic" are both
mentioned, but when people SAY "Herbrand logic", what THEY -- since, UNlike you, THEY KNOW what they are talking about --
wind UP MEANING is first-order logic WITH HERBRAND *S*E*M*A*N*T*I*C*S. Herbrand's whole contribution here is based on
THE TERM MODEL.
> I did, however, find an informative web page from people working at Stanford University (Mr. Greene's alma mater).
> Among other things, it gives explicit differences between "first-order logic" and Herbrand logic.
NO IT DOESN'T. Good grief!
You cannot quote any of the explicit differences because you do not understand them.
> I placed the former in quotes because there are those who would simply define "logic" in terms of syntax alone.
NO THERE AREN'T. GOOD GRIEF!
Again, if you had ever studied any of this stuff, you would KNOW that THE COMPLETENESS THEOREM
OBLITERATES THIS DISTINCTION.
> Normaly, however, first-order logic is understood to have Tarski semantics.
Herbrand provided AN ALTERNATE SEMANTICS (an alternate candidate-method for model
construction)
>
> The web page is at the link,
>
>
>
> A passage within its conclusion had been of interest to me. It reads,
>
> "To test the value of Herbrand semantics in this regard,
Herbrand SEMANTICS, dipshit, NOT "Herbrand logic", which, I repeat, NObody talksqbout!
> we recently switched Stanford's introductory logic course from Tarskian semantics to Herbrand semantics.
> The results have been gratifying. Students get semantics right away. They do better on quizzes.
I don't know what to say to that. I had been introduced before I got there.
I had to take the introductory course there since it was computer-based and since
computer science and education were my two main fields of interest --
and at the non-introductory level, when I finally got around to taking the official
first-order logic course (OF COURSE with Tarskian semantics, although, since that
was the only alternative, we didn't know any different) I only got an A- instead of an A,
but it IS NOT like Herbrand semantics would have helped! Again, via the completeness theorem,
IT TURNS OUT YOU CAN DO FOL WITH SYNTAX *A*N*Y*W*A*Y*!
> And there are fewer complaints about feeling lost. It is clear that many
> students come away from the course feeling empowered and intent on using logic.
> More so than before anyway."
>
> Aww...
>
> Mathematics is hard. So, we should redefine mathematics so that people who are unwilling to put in the hard work can feel good about themselves.
Mitch,please, what degree did YOU finally finish???
> But, that is not what is going on here.
YOU WOULDN'T KNOW.
>
> Meanwhile, physicists have put themselves into a similar quandry. Like the computer scientists, they are blaming the evil mathematicians.
>
> The link cites some significant differences between Herbrand logic and first-order logic.
NO, IT DOESN'T. It talks about Herbrand MODELS, Herbrand BASES, and Herbrand STRUCTURES,
because the Herbrand variation is a variation IN SEMANTICS. Any change in the resultant logic
is a STRAIGHTFORWARD consequence of the change IN SEMANTICS, and people WHO KNOW
what they're talking about SAY "Herbrand semantics"or "Herbrand structures" or "Herbrand base"
AND NOT "Herbrand Logic".
By contrast, the Wikipedia page on a Herbrand structure conflates the two in its first sentence
>
>
https://en.m.wikipedia.org/wiki/Herbrand_structure
>
> Again, this conflation is precisely why I put the first mention of "first-order logic" in scare quotes with the accompanying explanation.
Oh, shut THE FUCK up! The wikipedia page says Herbrand_structure because THAT'S A REAL THING.
"Herbrand logic" is YOUR fantasy. It's not a "conflation" if YOU can't cite them AS DIFFERENT!
And the link you gave at
http://intrologic.stanford.edu/extras/manifesto.html
DOES NOT make them different! IT CORRECTLY talks about Herbrand SEMANTICS
and about CHANGING TO that semantics!